137 строки
3.5 KiB
C
137 строки
3.5 KiB
C
/*
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* Silead touchscreen driver DMI based configuration code
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*
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* Copyright (c) 2017 Red Hat Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* Red Hat authors:
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* Hans de Goede <hdegoede@redhat.com>
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*/
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#include <linux/acpi.h>
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#include <linux/device.h>
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#include <linux/dmi.h>
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#include <linux/i2c.h>
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#include <linux/notifier.h>
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#include <linux/property.h>
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#include <linux/string.h>
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struct silead_ts_dmi_data {
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const char *acpi_name;
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struct property_entry *properties;
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};
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static struct property_entry cube_iwork8_air_props[] = {
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PROPERTY_ENTRY_U32("touchscreen-size-x", 1660),
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PROPERTY_ENTRY_U32("touchscreen-size-y", 900),
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PROPERTY_ENTRY_BOOL("touchscreen-swapped-x-y"),
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PROPERTY_ENTRY_STRING("firmware-name", "gsl3670-cube-iwork8-air.fw"),
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PROPERTY_ENTRY_U32("silead,max-fingers", 10),
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{ }
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};
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static const struct silead_ts_dmi_data cube_iwork8_air_data = {
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.acpi_name = "MSSL1680:00",
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.properties = cube_iwork8_air_props,
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};
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static struct property_entry jumper_ezpad_mini3_props[] = {
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PROPERTY_ENTRY_U32("touchscreen-size-x", 1700),
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PROPERTY_ENTRY_U32("touchscreen-size-y", 1150),
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PROPERTY_ENTRY_BOOL("touchscreen-swapped-x-y"),
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PROPERTY_ENTRY_STRING("firmware-name", "gsl3676-jumper-ezpad-mini3.fw"),
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PROPERTY_ENTRY_U32("silead,max-fingers", 10),
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{ }
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};
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static const struct silead_ts_dmi_data jumper_ezpad_mini3_data = {
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.acpi_name = "MSSL1680:00",
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.properties = jumper_ezpad_mini3_props,
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};
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static const struct dmi_system_id silead_ts_dmi_table[] = {
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{
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/* CUBE iwork8 Air */
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.driver_data = (void *)&cube_iwork8_air_data,
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "cube"),
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DMI_MATCH(DMI_PRODUCT_NAME, "i1-TF"),
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DMI_MATCH(DMI_BOARD_NAME, "Cherry Trail CR"),
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},
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},
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{
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/* Jumper EZpad mini3 */
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.driver_data = (void *)&jumper_ezpad_mini3_data,
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Insyde"),
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/* jumperx.T87.KFBNEEA02 with the version-nr dropped */
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DMI_MATCH(DMI_BIOS_VERSION, "jumperx.T87.KFBNEEA"),
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},
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},
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{ },
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};
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static void silead_ts_dmi_add_props(struct device *dev)
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{
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struct i2c_client *client = to_i2c_client(dev);
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const struct dmi_system_id *dmi_id;
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const struct silead_ts_dmi_data *ts_data;
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int error;
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dmi_id = dmi_first_match(silead_ts_dmi_table);
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if (!dmi_id)
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return;
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ts_data = dmi_id->driver_data;
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if (has_acpi_companion(dev) &&
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!strncmp(ts_data->acpi_name, client->name, I2C_NAME_SIZE)) {
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error = device_add_properties(dev, ts_data->properties);
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if (error)
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dev_err(dev, "failed to add properties: %d\n", error);
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}
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}
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static int silead_ts_dmi_notifier_call(struct notifier_block *nb,
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unsigned long action, void *data)
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{
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struct device *dev = data;
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switch (action) {
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case BUS_NOTIFY_ADD_DEVICE:
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silead_ts_dmi_add_props(dev);
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break;
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default:
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break;
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}
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return 0;
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}
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static struct notifier_block silead_ts_dmi_notifier = {
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.notifier_call = silead_ts_dmi_notifier_call,
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};
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static int __init silead_ts_dmi_init(void)
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{
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int error;
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error = bus_register_notifier(&i2c_bus_type, &silead_ts_dmi_notifier);
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if (error)
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pr_err("%s: failed to register i2c bus notifier: %d\n",
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__func__, error);
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return error;
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}
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/*
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* We are registering out notifier after i2c core is initialized and i2c bus
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* itself is ready (which happens at postcore initcall level), but before
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* ACPI starts enumerating devices (at subsys initcall level).
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*/
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arch_initcall(silead_ts_dmi_init);
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